Let the main object of this, our Didactic, be as follows: To seek and to find a method of instruction, by which teachers may teach less, but learners may learn more.
让我们这本《大教学论》的主要目标如下：寻求并找到一种教学方法，使教师教得更少，但学生学得更多。
对称性是降低复杂性的概念（协同例程包括子例程）；到处寻找它。
效率和道德必须齐头并进。今天的偷工减料明天将让我们付出沉重代价。
The art of doing mathematics consists in finding that special case which contains all the germs of generality.
在商业中，你必须愿意承担风险，但必须是经过计算的风险。
诗人的心必须向天堂所有的风敞开。